| Institute for Liberal Studies (Romania) | Romania | Bucharest | 2006 |
| Institute for Lifestyle Options and Longevity (ILOL) | Czech Republic | Zeleneč | |
| Institute for Market Economics (IME) | Bulgaria | Sofia | |
| Institute for Modern Slovakia | Slovakia | Bratislava | 2007 |
| Institute for Popular Studies | Romania | Bucharest | 2008 |
| Institute for Public Affairs | | | |
| Institute for Research in Economics and Fiscal Issues (IREF) | | | |
| Institute for Research on Economic and Fiscal Issues | France | Paris | 2002 |
| Institute for Security Studies (South Africa) | South Africa | Pretoria | 1991 |
| Institute for Social Integration | Bulgaria | Sofia | 2002 |
| Institute for Social-Ecological Economy Research | Germany | Munich | 1990 |
| Institute for Strategic Studies and Prognoses (ISSP) | Montenegro | Podgorica | |
| Institute for Strategic and Development Studies (ISTAME) | Greece | Athens | 1995 |
| Institute for Transitional Democracy and International Security (ITDIS) | Hungary | Budapest | |
| Institute for cultural diplomacy (icd) | Germany | Berlin | 1999 |
| Institute of African Economics | | | |
| Institute of Democratic Politics (Lithuania) | Lithuania | Vilnius | 1999 |
| Institute of Economic Affairs | United Kingdom | | 1955 |
| Institute of Economic Affairs (Kenya) | Kenya | Nairobi | 1994 |
| Institute of Economic and Social Studies | Slovakia | Bratislava | 2006 |
| Institute of Euro-Atlantic Cooperation | | | |
| Institute of Political Studies of the Polish Academy of Science | | | |
| Institute of Public Affairs (Australia) | Australia | Melbourne | 1943 |
| Institute of Public Affairs (Instytut Spraw Publicznych) | | | |
| Institute on Governance | Canada | Ottawa | 1990 |
| Instituto Accion | Peru | Lima | 2005 |
| Instituto Acton Argentina | Argentina | | 1990 |
| Instituto Cultural Ludwig Von Mises | Mexico | | |
| Instituto Democracia y Mercado | Chile | Santiago de Chile | 2008 |
| Instituto Ecuatoriano de Economia Politica - IEEP | Ecuador | Guayaquil | 1991 |
| Instituto Eurodemokratias Glafko Klerides | Cyprus | Nicosia | 1999 |
| Instituto Francisco Sa Carnero | Portugal | Lisbon | 1980 |
| Instituto Francisco Sá Carneiro | Portugal | Lisbon | 1980 |
| Instituto Invertir | Peru | Líma | |
| Instituto Juan de Mariana | Spain | Madrid | 2005 |
| Instituto Liberal | Brazil | Rio de Janeiro | 1983 |
| Instituto Liberal de Sao Paulo | Brazil | São Paulo | 2014 |
| Instituto Liberdade | Brazil | Porto Alegre | 2004 |
| Instituto Libertad | Costa Rica | Cartago | 2001 |
| Instituto Libertad y Democracia | Peru | Lima | 1979 |
| Instituto Libertad y Progreso | Colombia | | |
| Instituto Ludwig von Mises Brasil | Brazil | | |
| Instituto Luigi Sturzo | Italy | Rome | 1951 |
| Instituto Manuel Oribe | Uruguay | | 1985 |
| Instituto Millenium | Brazil | Rio de Janeiro | 2005 |
| Instituto Mises Hispano | USA | Auburn, Alabama | 2018 |
| Instituto Peruano de Economia | Peru | Lima | 1994 |
| Instituto Peruano de Economía | Peru | Lima | 1994 |
| Instituto Politico para la Libertad | Peru | Lima | |
| Instituto Res Publica | Chile | Santiago de Chile | |
| Instituto Veritas | Honduras | | |
| Instituto de Ciencia Politica | Colombia | Bogotá | 1987 |
| Instituto de Ciencia, Economia, Educacion y Salud | Bolivia | Santa Cruz de la Sierra | |
| Instituto de Desarrollo Empresarial y Accion Social IDEAS | Costa Rica | San José | 2013 |
| Instituto de Estudios Estrategicos e Internacionales | Spain | Madrid | 1970 |
| Instituto de Estudios Estrategicos y Politicas Publicas | Nicaragua | Managua | 2004 |
| Instituto de Estudios de Libre Comercio | | | |
| Instituto de Estudios de la Accion Humana | Peru | | |
| Instituto de Estudios de la Sociedad | Chile | Santiago de Chile | 2006 |
| Instituto de Estudos Empresariais | Brazil | Porto Alegre | 1984 |
| Instituto de Estudos para o Desenvolvimento | Portugal | Lisbon | 1979 |
| Instituto de Formacao de Lideres | Brazil | Belo Horizonte | |
| Instituto de Libre Empresa | Peru | | 1998 |
| Instituto de Pensamiento Estrategico Agora S.A. | Mexico | | |
| Instituto para la Libertad y el Analisis de Politicas | Costa Rica | | |
| Instituto von Mises Barcelona | Spain | Barcelona | 2008 |
| Instytut Globalizacji | Poland | Gliwice | |
| Instytut Sobieskiego | | | 2005 |
| Inter Region Economic Network | Kenya | | |
| Interamerican Institute for Democracy | USA | Miami | |
| Intercollegiate Studies Institute | USA | Wilmington | |
| International Atlantic Economic Society | | | |
| International Center for Pension Reform | Chile | | |
| International Democratic Initiative Foundation D66 (IDI) | Netherlands | The Hague | 1990 |
| International Educational Centre (IEC) | Croatia | Zagreb | 2005 |
| International Federation of Liberal Youth | United Kingdom | London | 1979 |
| International Foundation for Research in Experimental Economics | | | |
| International Institute for Strategic Studies | | | |
| International Institute of Strategic Studies | | | |
| International Leaders Summit | | | |
| International Policy Network | | | |
| International Republican Institute | USA | Washington, D.C. | 1983 |
| Intertic | Italy | Mailand | |
| Inštitut dr Janeza Evangelista Kreka | Slovenia | Ljubljana | 2009 |
| Istanbul Network for Liberty | | | |
| Istituto Acton | Italy | Rome | 2003 |
| Istituto Bruno Leoni | Italy | Turin | |
| Istituto Europeo per lo Studio del Comportamento Umano | Italia | Parma | 2004 |
| Itinera Institute | Belgium | Brussels | 2006 |
| Ius et Lex | | | |
| Jarl Hjalmarson Foundation | Sweden | Stockholm | 1994 |
| Jerusalem Institute for Market Studies | Israel | Jerusalem | |
| Johannes Mikhelson Centre | Estonia | Tartus | 1993 |
| John Stuart Mill Institut für Freiheitsforschung | Germany | Heidelberg | |
| John Templeton Foundation | | | |
| Joint Air Power Competence Centre | Germany | Kalkar | |
| Joint Chemical, Biological, Radiological and Nuclear Defence | Czech Republic | Vyškov | |
| Joint Research Centre | EU/Belgium | | |
| Journal Sozialismus | Germany | Hamburg | 1972 |
| Joze Pucnik Institute | Slovenia | Ljubljana | 2006 |
| Juan de Mariana Institute | Spain | Madrid | |
| Julius Raab Stiftung | Austria | Vienna | 1961 |
| Julius-Raab-Stiftung | Austria | Wien | 1961 |
| Junge Freiheit | Germany | | 1986 |
| Junge Landsmannschaft Ostdeutschland | | | 1991 |
| Junior Achievement of Argentina | Argentina | | |
| József Attila Foundation | Hungary | Budapest | |
| K. Pulaski Foundation | | | |
| Kalander Foundation | Slovenia | Ljubljana | 1993 |
| Kalevi Sorsa Säätiö | Finland | Helsinki | 2005 |
| Karl Renner Institut | Austria | Vienna | 1972 |
| Katon Association | | | |
| Klub Jagielloński | | | |
| Konrad Adenauer Stiftung | Germany | Sankt Augustin/Bonn | 1955 |
| Konvent für Deutschland | Germany | Berlin | |
| Kristdemokratiskt Internationellt Centre | Sweden | Stockholm | 2005 |
| Kós Károly Academy Foundation | Romania | Targu Mures | 2010 |
| LIBERA Bolivia | Bolivia | La Paz | |
| Latin American and Iberian Law and Economics Association | Peru | | 1995 |
| Latinoamerica Libre | Chile | Santiago de Chile | |
| Left Forum | Finland | Helsinki | 2007 |
| Legatum Institute | UK | London | 2007 |
| Letras Libres | Mexico | | |
| LibMov (Italy) | Italy | Parma | |
| Libera | Finland | | |
| Libera! | Belgium | Brussels | 2010 |
| Liberaal Kennis Centrum | Belgium | Brussels | |
| Liberal Academy Tbilisi | Georgia | Tiflis | 2006 |
| Liberal Flemish Students Organization (LVSV) | Belgium | | |
| Liberal Institute | Switzerland | | 1979 |
| Liberal Institute for Political Analyses (LIPA) | Bulgaria | Sofia | 2010 |
| Liberal Politological Institute (LPI) | Bulgaria | Sofia | 2004 |
| Liberal Society Foundation | Slovakia | Bratislava | 1995 |
| Liberal Vision | | | |
| Liberales | Belgium | Gent | 2002 |
| Liberales Institut | Switzerland | Zürich | 1979 |
| Liberales Zukunftsforum | Austria | Vienna | 2011 |
| Liberalismo Whig | | | |
| Liberalismo.org | | | |
| Liberalni Institute | Czech Republic | Prague | 1989 |
| Liberia Democracy Watch | Liberia | Monrovia | 1996 |
| Libertad Digital | | | |
| Libertarian Alliance | United Kingdom | | |
| Libertarian Party of Australia | Australia | Burwood, Victoria | 2020 |
| Liberty Australia | Australia | Brunswick | 2011 |
| Liberty Fund Inc. | | | |
| Liberty International | USA | San Francisco | 1980 |
| Liberté Chérie | France | Paris | |
| Library of Economics and Liberty | | | |
| Libremente.net | Argentina | | |
| Libro Libre | Costa Rica | | |
| Liderazgo y Vision, A. C. | Venezuela | Caracas y Valencia | 1995 |
| Lideres do Amanha | Brazil | Vitória | |
| List-Gesellschaft | Germany | Münster | |
| Lithuanian Free Market Institute | Lithuania | Vilnius | 1990 |
| Ludwig Erhard Foundation | | | |
| Ludwig von Mises Institut Deutschland | Germany | Munich | 2012 |
| Ludwig von Mises Institute | USA | Auburn, Alabama | 1982 |
| Ludwig von Mises Institute Canada | Canada | Toronto | 2010 |
| Ludwig von Mises Institute Europe | Belgium | Leuven | 2001 |
| Ludwig von Mises Institute Poland | Poland | Warschau | 2003 |
| Ludwig von Mises Institute Romania | Romania | | 2001 |
| Luigi Sturzo Institute | Italy | Rome | 1951 |
| LyD - Libertad y Desarrollo | Chile | Santiago de Chile | 1990 |
| M.E.S.A. 10 | Slovakia | Bratislava | 1992 |
| MESA 10 | | | |
| Mackinac Center | | | |
| Magma (Finland) | Finland | Helsinki | 2008 |
| Magna Carta Foundation | Italy | Rome | 2004 |
| Management club (Austria) | Austria | Vienna | 1972 |
| Manhattan Institute | | New York | 1977 |
| Manifesto Foundation | Norway | Oslo | 2003 |
| Markedscentret | | | |
| Mas Por Libertad | Mexico | Mexico City | |
| Masarykova demokratická akademie | Czech Republic | Prague | 1991 |
| Mathematica Policy Research | USA | Princeton, NJ | |
| Max Van Der Stoel Stichting | Netherlands | Amsterdam | 2013 |
| Max-Planck-Institut für Steuerrecht und Öffentliche Finanzen | Germany | München | 2011 |
| Medunarodni Edukacijski Centar | Croatia | Zagreb | 2008 |
| Mercatus Center | | | |
| Mercurius Society | | | |
| Mexico Business Forum | Mexico | | 1996 |
| Mexico Evalua | Mexico | Mexico City | |
| Military Engineering | Germany | Ingolstadt | |
| Military Medicine | Hungary | Budapest | |
| Military Police | Poland | Bydgoszcz | |
| Milken Institute | | | |
| Millenium Institute | | | |
| Mind, Behaviour, and Development Team (World Bank) | International | Washington, D.C. | 2015 |
| Mindlab (DK) | Denmark | Copenhagen | |
| Miquel Coll I Alentorn Institute of Humanistic Studies | Spain | Barcelona | 1992 |
| Mises Colombia | Colombia | Medellin | 2012 |
| Mises Czech Republic | Czech Republic | | 2016 |
| Mises Ecuador | | | 2010 |
| Mises Estonia | Estonia | Tallinn | 2012 |
| Mises Finland | Finland | | 2011 |
| Mises Global | | | |
| Mises Israel | | | |
| Mises Japan | | | 2011 |
| Mises Netherlands | Netherlands | Utrecht | 2013 |
| Mises Portugal | Portugal | | 2011 |
| Mises Russia | Russia | | 2011 |
| Mises South-Africa | South Africa | Dikgatlong | 2011 |
| Mises Sweden | Sweden | | 2010 |
| Mises Switzerland | Switzerland | Steinmaur | 2010 |
| Mises Turkey | Turkey | | 2013 |
| Mises Ukraine | Ukraine | | 2010 |
| Modelling and Simulation | Italy | Rome | |
| Mont Pelerin Society | | | 1947 |
| Montreal Economic Institute | | | |
| Mountain Warfare | Slovenia | Poljče | |
| Movimento Endireita | | | 2007 |
| Movimento Liberal Social | Portugal | Lisbon | 2005 |
| Movimiento Demócrata Liberal | | | |
| Mr. Hans van Mierlo Stichting | Netherlands | The Hague | 1972 |
| Murray Rothbard Institut | | | |
| Murray Rothbard Instituut | Belgium | Antwerpen | 2007 |
| Más Por Libertad | Mexico | Mexico City | |
| NEOS Lab | Austria | Vienna | 2014 |
| NOVUM – Institute for strategic and applicable research | Slovenia | Ljubljana | 2008 |
| National Chamber Foundation | | | |
| Natolin European Centre | | | |
| Naval Mine Warfare | Belgium | Oostende | |
| Nesta | UK | London | 1998 |
| Network for a Free Society | | | |
| Netzwerk für Ordnungsökonomik und Sozialphilosophie | Deutschland | 79100 Freiburg i.Br. | 2016 |
| New Consensus | USA | Washington, DC | 2018 |
| New Direction - The Foundation for European Reform | Belgium | Brussels | 2010 |
| New Economic School | Georgia | Tiflis | 2001 |
| New Europe College | | | |
| New Initiatives Centre | Bosnia and Herzegowina | Sarajevo | 2011 |
| New Social Market Economy Foundation | Germany | Berlin | 2000 |
| Nicos Poulantzas Institute | Greece | Athens | 1997 |
| Norwegian Nudging Network, The | Norway | Oslo | |
| Notoria Sociedad Libre | Bolivia | La Paz | |
| Nouveaux Economistes | | | |
| Nova Civitas | | | |
| Novo Drustvo | Croatia | Zagreb | 1991 |
| Nowa Politologia | | | |
| Nudge Italia | Italy | Milan | 2014 |
| Nudge Unit Greece | Greece | Thessaloniki | 2016 |
| Nudge.nl | Netherlands | Amsterdam | |
| NudgeFrance | France | | |
| OECD - Behavioural Economics and Environmental Policy Design | International | | 2013 |
| OECD - Directorate for Public Governance (Regulatory Policy) | International | | |
| OECD - Observatory of Public Sector Innovation | International | | 2008 |
| OHRID Institute for Economic Strategies and International Affairs | Macedonia | Skopje | |
| OIKOS CHILE Ltda. | Chile | | 2007 |
| Objetivismo en Español | | | |
| Observer Research Foundation | India | | |
| Oikos | Belgium | Brussels | 2009 |
| Olof Palme International Centre | Sweden | Stockholm | 1992 |
| Open Europe | | | |
| Open Europe Berlin | Germany | Berlin | 2012 |
| Open Society Fund Prague | | | |
| Operations in Confined and Shallow Waters | Germany | Kiel | |
| OrdemLivre.org | Brazil | | |
| Organizacion por la Democracia Liberal en Venezuela | Venezuela | | |
| Osrodek Mysli Politycznej | Poland | Krakow | |
| Pacific Research Institute | USA | San Francisco | 1979 |
| Peru Liberal | Peru | | |
| Peruventures | Peru | | |
| Peruvian Institute of Free Enterprise | | | |
| Peutinger Collegium | | | |
| Philadelphia Society | | | |
| Philanthropy Roundtable | USA | | |
| Plenum der Ökonomen | Germany | Hamburg | 2010 |
| Poder Limitado | Spain | La Coruña | 2007 |
| Poesia y Politica | Nicaragua | | |
| Poesía y Política | Nicaragua | | |
| Policy Exchange | UK | London | 2002 |
| Policy Network | UK | London | 2000 |
| Polish Institute for International Relations | | | |
| Polish Institute of Foreign Affairs | | | |
| Polish-American Foundation for Economic Research and Education | | | |
| Politeia | United Kingdom | London | |
| Political Theology | | | |
| Politically Incorrect | Germany/EU | | 2004 |
| Politicas Públicas para la Libertad | Bolivia | Santa Cruz de La Sierra | |
| Politische Akademie der ÖVP (PolAk) | Austria | Vienna | 1972 |
| Prague Twenty | | | |
| Press Freedom Monitoring Centre | | | |
| Principios Republicanos para una Sociedad Abierta | Argentina | | |
| Pro Patria Institute | Estonia | Tallinn | 1995 |
| ProMarktwirtschaft | Austria | Vienna | 2011 |
| Prof.mr. B.M. Teldersstichting | Netherlands | The Hague | 1954 |
| Progress Foundation | Switzerland | Zurich | |
| Progress Institute for Social Democracy | Macedonia | Skopje | |
| Progressive Thought Institute | Turkey | Istanbul | 2013 |
| Progressive Vision | United Kingdom | London | 2007 |
| Project for democratic union | Germany/EU | Munich | 2013 |
| Prometheus - Das Freiheitsinstitut | Germany | Berlin | |
| Public Choice Society | | | |
| Public Policy Forum | Canada | Ottawa, ON | 1987 |
| Publixphere | Germany | Berlin | 2012 |
| Quid Novi | Netherlands | Den Haag | 2005 |
| RAND Corporation | | | |
| Raggruppamento Europa Sociale | Italy | Milan | 1995 |
| Ratio Institute | Sweden | Stockholm | 2002 |
| Re-Public | Greece | | 2006 |
| Re:publik | Germany | Berlin | 2010 |
| Reason Foundation | | | |
| Reason Public Policy Institute | USA | | |
| Red Liberal de America Latina - RELIAL | Mexico | Mexico City | 2004 |
| Reform | United Kingdom | London | 2002 |
| Reform Scotland | United Kingdom | Edinburgh | 2008 |
| Republican Confederation of Entrepreneurship | | | |
| Republikon Scientific, Educational and Research Foundation | Hungary | Budapest | 2008 |
| Res Publica | | | |
| Research Institute PROMITHEAS | Cyprus | Nicosia | 2011 |
| Research Unit in Behavioural Economics and Neuroeconomics | South African Republic | Cape Town | |
| Respublica | Argentina | | |
| Riinvest Institute for Development Research | | Prishtina | |
| Roman Herzog Institut | Germany | Munich | 2002 |
| Romania Think Tank | Romania | Bukarest | |
| Romanian Center for European Policies | Romania | Bucharest | 2009 |
| Rosa Luxemburg Foundation | Germany | Berlin | 1990 |
| Royal Economic Society | | | |
| Russell Sage Foundation - Behavioural Economics Program | USA | New York | 1986 |
| SAMAK | Nordic Countries | Frederiksberg | 1886 |
| SME Union | Czech Republic | Prag | |
| SOCIA – Foundation to promote social change | | | |
| SOCreform | | | |
| SODEV Sosyal Demokrasi Vakfi | Turkey | Istanbul | 1994 |
| Saferworld | | | |
| Sauvegarde Retraites | France | Paris | |
| Science and Environmental Policy Project | | | |
| Security & Defence Agenda | | | |
| Security Force Assistance | Italy | Rome | |
| Selsdon Group | | | |
| Sezession | Germany | Steigra | |
| Slobodna Misao (Free Thought) | Montenegro | Podgorics | |
| Slovak F.A. Hayek Foundation | | | |
| Sobieski Institute | Poland | Warschau | |
| Social Affairs Unit | | | |
| Social and Behavioral Sciences Team (Subcommittee) | USA | Washington, D.C. | 2015 |
| Societat d'Estudis Econòmics | | | |
| Society for European Dialogue | Czech Republic | Prague | 2001 |
| Society for Individual Liberty | Bulgaria | Sofia | 2003 |
| Society for Social and Economic Studies (EKOME) | Greece | | 1987 |
| Society for the Development of Austrian Economics | | | |
| Solidar | EU | Brussels | 1948 |
| Southern Economics Association | | | |
| SportsEconAustria Institut für Sportökonomie | | | |
| Staats- und Wirtschaftspolitische Gesellschaft | Germany | Hamburg | 1962 |
| Stability Policing | Italy | Vicenza | |
| Standing Conference of Civil Institute | | | |
| State Policy Network | Virginia | Arlington | 1992 |
| Stichting Gerrit Kreveld | Belgium | Gent | 2000 |
| Stichting Internationaal Democratisch Initiatief (IDI) | Netherlands | Den Haag | |
| Stifterverband für die Deutsche Wissenschaft | Germany | Essen | 1920 |
| Stiftung Ja zum Leben | Germany | 59872 Meschede | 1988 |
| Stiftung Marktwirtschaft | Germany | Berlin | 1982 |
| Stiftung Ordnungspolitik | Germany | Freiburg | 1999 |
| Stockholm Network | United Kingdom | London | 1997 |
| Strategic Communications | Latvia | Riga | |
| Studienzentrum Weikersheim | Austria | Vienna | 1979 |
| Support Initiative for Liberty and Democracy (SILBA) | Denmark | Copenhagen | 1994 |
| Svenska bildningsförbundet | Finland | Helsinki | 1973 |
| Svetilnik | | | |
| Swedish International Liberal Centre | Sweden | Stockholm | |
| Swedish Nudging Network | Sweden | | |
| Szabadságért Alapítvány | Hungary | Budapest | 2012 |
| Századvég Foundation | Hungary | Budapest | 1993 |
| TAKSAV | Turkey | Ankara | 1993 |
| TASC | Ireland | Dublin | 2001 |
| TOPAZ | Czech Republic | Prague | 2012 |
| Tancsis-Milhaly Alapitvany | Ungarn | Budapest | 2003 |
| Tankesmedja Tiden | Sweden | Stockholm | 2006 |
| Teldersstichting | | | |
| Test2694 | | | |
| The Centre for Independent Studies | Australia | | |
| The Centre for Social Justice | United Kingdom | London | |
| The Committee on the Present Danger | | | |
| The Copenhagen Institute | Denmark | Copenhagen | 2003 |
| The Croation Center for the Renewal of Culture | | | |
| The European Nudging Network | EU/Denmark | Odense | 2014 |
| The Fabian Society | UK | London | 1884 |
| The Federalist Society | | | |
| The Fund for American Studies | USA | Washington, D.C. | 1967 |
| The Future of Freedom Foundation | USA | Fairfax / Virginia | 1989 |
| The Gold Standard Institute | | | |
| The Hayek Foundation | Russia | Moscow | 2002 |
| The Heartland Institute | USA | Chicago | 1984 |
| The Kosciuszko Institute | Poland | Krakow | 2000 |
| The Leadership Institute | USA | Arlington | 1979 |
| The Nassau Institute | Bahamas | Nassau | 1995 |
| The New Zealand Initiative | | | |
| The Property and Freedom Society | | | 2006 |
| The Prosperity and Freedom Society | | | |
| The Prosperity and Freedom Soviety | | | |
| The Slovak Atlantic Commission | | | |
| The i-teams.org | UK/international | London | |
| Think Foundation | Latvia | Riga | 2011 |
| Think Tank E2 | Finland | Helsinki | 2006 |
| Think Tank Gesundheit | Germany | Hamburg | |
| Thule Seminar | | | 1980 |
| Timbro | Sweden | Stockholm | 1978 |
| Tocqueville-Acton Center for Studies and Documenation | | | |
| Tocqueville-Acton Centre for Studies and Research | Italy | Milan | 2007 |
| Toivo Think Tank | Finland | Helsinki | 1938 |
| Transform! Italia | Italy | Rome | |
| Transform! Luxembourg | Luxembourg | Luxembourg | 2008 |
| Transform! moldova | Moldova | | 2010 |
| Transform!Danmark | Denmark | Copenhagen | 2012 |
| Transform!at | Austria | Vienna | 2006 |
| Transparencia por Colombia | Colombia | Bogotá | 1998 |
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| Universidad Francisco Marroquin | Guatemala | Guatemala | 1971 |
| Universidad Peruana de Ciencias Aplicadas | Peru | Lima | 1994 |
| Unión de Partidos Latinoamericanos | | | |
| Verein für Socialpolitik | | | |
| Vernon K. Krieble Foundation | USA | | |
| ViSiLi | Finland | Helsinki | 1990 |
| Vienna Economic Forum | | | |
| Visio | Finland | Helsinki | 1990 |
| Vision and Reality | | | |
| Walter Eucken Institut | Germany | Freiburg | 1954 |
| Washington Legal Foundation | | | |
| Wei(s)se Wirtschaft | | Vienna | 2013 |
| Weisse Wirtschaft | Austria | Vienna | 2013 |
| Wert der Freiheit gGmbH | Germany | Berlin | 2011 |
| Wetenschappelijk Instituut voor het CDA | Netherlands | Den Haag | 1977 |
| Wiardi Beckman Stichting | Netherlands | The Hague | |
| Wilfried Martens Center for European Studies | Belgium | Brussels | 2007 |
| Wilhelm-Röpke-Institut | Germany | Erfurt | 2007 |
| Wilson Center | | | |
| Wissenschaftlicher Beirat des Bundesministeriums für Wirtschaft und Energie | Germany | Berlin | 1943 |
| Wissensmanufaktur | Germany | 29664 Walsrode | 2016 |
| Work for All | Belgium | Brüssel | 2004 |
| Zentrum für gesellschaftlichen Fortschritt | Germany | Frankfurt am Main | |
| Zivile Koalition | Germany | Berlin | 2006 |